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13 Cards in this Set
- Front
- Back
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How does the basilar membrane vibrate with respect to frequency?
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High frequency, base vibrates more, dissipates energy, distance traveled from base to apex is small.
Stiffness of membrane decreases from base on apex. |
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Central auditory pathway
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Hair cells, auditory nerve, ventral cochlear nuclei, superior olive, (projects to one side of brain), inferior colliculus, MGN (thalamus), cortex
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Posterior Parietal Cortex
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sensory map, orienting to a stimulus that may be important
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Cingulate Cortex
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Limbic area, motivational value, is the cue important?
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Frontal cortex
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Attention for Action
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Reticular nucleus
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Thalamus, arousal and vigilance
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Pulvinar nucleus
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Thalamus, connected to many lobes, modulate widespread cortical activity
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Frontal Eye Field
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Activity feeds back to cortical areas, enhances activity there
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Lateral Pathways
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voluntary movement, direct cortical control, dorsal areas, corticospinal tract crosses over at medulla (contralateral control), rubrospinal tract, lesions yield fractional movement of arms/hands on contralateral side
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Ventromedial Pathways
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posture, locomotion, brain stem control, low towards midlne
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Vestibulospinal tract
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vestibular nucleus, balance
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Tectospinal tract
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superior colliculus, involved in gaze
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Pontine tract and medullary reticulospinal tract
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enhances/liberates antigravity reflexes, together yield balance
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